vbox_mode.c@ 96407

Last change on this file since 96407 was 96407, checked in by vboxsync, 2 years ago
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1	/* $Id: vbox_mode.c 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 Oracle and/or its affiliates.
8	* This file is based on ast_mode.c
9	* Copyright 2012 Red Hat Inc.
10	* Parts based on xf86-video-ast
11	* Copyright (c) 2005 ASPEED Technology Inc.
12	*
13	* Permission is hereby granted, free of charge, to any person obtaining a
14	* copy of this software and associated documentation files (the
15	* "Software"), to deal in the Software without restriction, including
16	* without limitation the rights to use, copy, modify, merge, publish,
17	* distribute, sub license, and/or sell copies of the Software, and to
18	* permit persons to whom the Software is furnished to do so, subject to
19	* the following conditions:
20	*
21	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
24	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
25	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
26	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
27	* USE OR OTHER DEALINGS IN THE SOFTWARE.
28	*
29	* The above copyright notice and this permission notice (including the
30	* next paragraph) shall be included in all copies or substantial portions
31	* of the Software.
32	*
33	*/
34	/*
35	* Authors: Dave Airlie <airlied@redhat.com>
36	* Michael Thayer <michael.thayer@oracle.com,
37	* Hans de Goede <hdegoede@redhat.com>
38	*/
39	#include "vbox_drv.h"
40	#include <linux/export.h>
41	#include <drm/drm_crtc_helper.h>
42	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
43	# include <drm/drm_plane_helper.h>
44	#endif
45	#if RTLNX_VER_MIN(5,1,0) \|\| RTLNX_RHEL_MAJ_PREREQ(8,1)
46	# include <drm/drm_probe_helper.h>
47	#endif
48
49	#if RTLNX_VER_MIN(6,0,0)
50	# include <drm/drm_edid.h>
51	#endif
52
53	#include "VBoxVideo.h"
54
55	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
56	u32 handle, u32 width, u32 height,
57	s32 hot_x, s32 hot_y);
58	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
59
60	/**
61	* Set a graphics mode. Poke any required values into registers, do an HGSMI
62	* mode set and tell the host we support advanced graphics functions.
63	*/
64	static void vbox_do_modeset(struct drm_crtc *crtc,
65	const struct drm_display_mode *mode)
66	{
67	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
68	struct vbox_private *vbox;
69	int width, height, bpp, pitch;
70	u16 flags;
71	s32 x_offset, y_offset;
72
73	vbox = crtc->dev->dev_private;
74	width = mode->hdisplay ? mode->hdisplay : 640;
75	height = mode->vdisplay ? mode->vdisplay : 480;
76	#if RTLNX_VER_MIN(4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
77	bpp = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32;
78	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
79	#elif RTLNX_VER_MIN(3,3,0)
80	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
81	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
82	#else
83	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
84	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
85	#endif
86	x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint;
87	y_offset = vbox->single_framebuffer ? crtc->y : vbox_crtc->y_hint;
88
89	/*
90	* This is the old way of setting graphics modes. It assumed one screen
91	* and a frame-buffer at the start of video RAM. On older versions of
92	* VirtualBox, certain parts of the code still assume that the first
93	* screen is programmed this way, so try to fake it.
94	*/
95	if (vbox_crtc->crtc_id == 0 && crtc->enabled &&
96	vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
97	vbox_crtc->fb_offset % (bpp / 8) == 0)
98	VBoxVideoSetModeRegisters(
99	width, height, pitch * 8 / bpp,
100	#if RTLNX_VER_MIN(4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
101	CRTC_FB(crtc)->format->cpp[0] * 8,
102	#else
103	CRTC_FB(crtc)->bits_per_pixel,
104	#endif
105	0,
106	vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
107	vbox_crtc->fb_offset / pitch + crtc->y);
108
109	flags = VBVA_SCREEN_F_ACTIVE;
110	flags \|= (crtc->enabled && !vbox_crtc->blanked) ?
111	0 : VBVA_SCREEN_F_BLANK;
112	flags \|= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
113	VBoxHGSMIProcessDisplayInfo(vbox->guest_pool, vbox_crtc->crtc_id,
114	x_offset, y_offset, vbox_crtc->fb_offset +
115	crtc->x * bpp / 8 + crtc->y * pitch,
116	pitch, width, height,
117	vbox_crtc->blanked ? 0 : bpp, flags);
118	}
119
120	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
121	{
122	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
123	struct vbox_private *vbox = crtc->dev->dev_private;
124
125	switch (mode) {
126	case DRM_MODE_DPMS_ON:
127	vbox_crtc->blanked = false;
128	/* Restart the refresh timer if necessary. */
129	schedule_delayed_work(&vbox->refresh_work, VBOX_REFRESH_PERIOD);
130	break;
131	case DRM_MODE_DPMS_STANDBY:
132	case DRM_MODE_DPMS_SUSPEND:
133	case DRM_MODE_DPMS_OFF:
134	vbox_crtc->blanked = true;
135	break;
136	}
137
138	mutex_lock(&vbox->hw_mutex);
139	vbox_do_modeset(crtc, &crtc->hwmode);
140	mutex_unlock(&vbox->hw_mutex);
141	}
142
143	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
144	const struct drm_display_mode *mode,
145	struct drm_display_mode *adjusted_mode)
146	{
147	return true;
148	}
149
150	/*
151	* Try to map the layout of virtual screens to the range of the input device.
152	* Return true if we need to re-set the crtc modes due to screen offset
153	* changes.
154	*/
155	static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
156	{
157	struct drm_crtc *crtci;
158	struct drm_connector *connectori;
159	struct drm_framebuffer *fb1 = NULL;
160	bool single_framebuffer = true;
161	bool old_single_framebuffer = vbox->single_framebuffer;
162	u16 width = 0, height = 0;
163
164	/*
165	* Are we using an X.Org-style single large frame-buffer for all crtcs?
166	* If so then screen layout can be deduced from the crtc offsets.
167	* Same fall-back if this is the fbdev frame-buffer.
168	*/
169	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
170	if (!fb1) {
171	fb1 = CRTC_FB(crtci);
172	if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
173	break;
174	} else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
175	single_framebuffer = false;
176	}
177	}
178	if (single_framebuffer) {
179	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
180	head) {
181	if (to_vbox_crtc(crtci)->crtc_id != 0)
182	continue;
183
184	if (!CRTC_FB(crtci))
185	break;
186	vbox->single_framebuffer = true;
187	vbox->input_mapping_width = CRTC_FB(crtci)->width;
188	vbox->input_mapping_height = CRTC_FB(crtci)->height;
189	return old_single_framebuffer !=
190	vbox->single_framebuffer;
191	}
192	}
193	/* Otherwise calculate the total span of all screens. */
194	list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
195	head) {
196	struct vbox_connector *vbox_connector =
197	to_vbox_connector(connectori);
198	struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
199
200	width = max_t(u16, width, vbox_crtc->x_hint +
201	vbox_connector->mode_hint.width);
202	height = max_t(u16, height, vbox_crtc->y_hint +
203	vbox_connector->mode_hint.height);
204	}
205
206	vbox->single_framebuffer = false;
207	vbox->input_mapping_width = width;
208	vbox->input_mapping_height = height;
209
210	return old_single_framebuffer != vbox->single_framebuffer;
211	}
212
213	static int vbox_crtc_set_base(struct drm_crtc *crtc,
214	struct drm_framebuffer *old_fb,
215	struct drm_framebuffer *new_fb,
216	int x, int y)
217	{
218	struct vbox_private *vbox = crtc->dev->dev_private;
219	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
220	struct drm_gem_object *obj;
221	struct vbox_framebuffer *vbox_fb;
222	struct vbox_bo *bo;
223	int ret;
224	u64 gpu_addr;
225
226	vbox_fb = to_vbox_framebuffer(new_fb);
227	obj = vbox_fb->obj;
228	bo = gem_to_vbox_bo(obj);
229
230	ret = vbox_bo_reserve(bo, false);
231	if (ret)
232	return ret;
233
234	ret = vbox_bo_pin(bo, VBOX_MEM_TYPE_VRAM, &gpu_addr);
235	vbox_bo_unreserve(bo);
236	if (ret)
237	return ret;
238
239	/* Unpin the previous fb. Do this after the new one has been pinned rather
240	* than before and re-pinning it on failure in case that fails too. */
241	if (old_fb) {
242	vbox_fb = to_vbox_framebuffer(old_fb);
243	obj = vbox_fb->obj;
244	bo = gem_to_vbox_bo(obj);
245	ret = vbox_bo_reserve(bo, false);
246	/* This should never fail, as no one else should be accessing it and we
247	* should be running under the modeset locks. */
248	if (!ret) {
249	vbox_bo_unpin(bo);
250	vbox_bo_unreserve(bo);
251	}
252	else
253	{
254	DRM_ERROR("unable to lock buffer object: error %d\n", ret);
255	}
256	}
257
258	if (&vbox->fbdev->afb == vbox_fb)
259	vbox_fbdev_set_base(vbox, gpu_addr);
260
261	vbox_crtc->fb_offset = gpu_addr;
262	if (vbox_set_up_input_mapping(vbox)) {
263	struct drm_crtc *crtci;
264
265	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
266	head) {
267	vbox_do_modeset(crtci, &crtci->mode);
268	}
269	}
270
271	return 0;
272	}
273
274	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
275	struct drm_display_mode *mode,
276	struct drm_display_mode *adjusted_mode,
277	int x, int y, struct drm_framebuffer *old_fb)
278	{
279	struct vbox_private *vbox = crtc->dev->dev_private;
280	int ret = vbox_crtc_set_base(crtc, old_fb, CRTC_FB(crtc), x, y);
281	if (ret)
282	return ret;
283	mutex_lock(&vbox->hw_mutex);
284	vbox_do_modeset(crtc, mode);
285	VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0,
286	vbox->input_mapping_width,
287	vbox->input_mapping_height);
288	mutex_unlock(&vbox->hw_mutex);
289
290	return ret;
291	}
292
293	static int vbox_crtc_page_flip(struct drm_crtc *crtc,
294	struct drm_framebuffer *fb,
295	#if RTLNX_VER_MIN(4,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
296	struct drm_pending_vblank_event *event,
297	uint32_t page_flip_flags,
298	struct drm_modeset_acquire_ctx *ctx)
299	#elif RTLNX_VER_MIN(3,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,0)
300	struct drm_pending_vblank_event *event,
301	uint32_t page_flip_flags)
302	#else
303	struct drm_pending_vblank_event *event)
304	#endif
305	{
306	struct vbox_private *vbox = crtc->dev->dev_private;
307	struct drm_device *drm = vbox->dev;
308	unsigned long flags;
309	int rc;
310
311	rc = vbox_crtc_set_base(crtc, CRTC_FB(crtc), fb, 0, 0);
312	if (rc)
313	return rc;
314
315	vbox_do_modeset(crtc, &crtc->mode);
316	mutex_unlock(&vbox->hw_mutex);
317
318	spin_lock_irqsave(&drm->event_lock, flags);
319
320	if (event)
321	#if RTLNX_VER_MIN(3,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
322	drm_crtc_send_vblank_event(crtc, event);
323	#else
324	drm_send_vblank_event(drm, -1, event);
325	#endif
326
327	spin_unlock_irqrestore(&drm->event_lock, flags);
328
329	return 0;
330	}
331
332	static void vbox_crtc_disable(struct drm_crtc *crtc)
333	{
334	}
335
336	static void vbox_crtc_prepare(struct drm_crtc *crtc)
337	{
338	}
339
340	static void vbox_crtc_commit(struct drm_crtc *crtc)
341	{
342	}
343
344	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
345	.dpms = vbox_crtc_dpms,
346	.mode_fixup = vbox_crtc_mode_fixup,
347	.mode_set = vbox_crtc_mode_set,
348	.disable = vbox_crtc_disable,
349	.prepare = vbox_crtc_prepare,
350	.commit = vbox_crtc_commit,
351	};
352
353	static void vbox_crtc_reset(struct drm_crtc *crtc)
354	{
355	}
356
357	static void vbox_crtc_destroy(struct drm_crtc *crtc)
358	{
359	drm_crtc_cleanup(crtc);
360	kfree(crtc);
361	}
362
363	static const struct drm_crtc_funcs vbox_crtc_funcs = {
364	.cursor_move = vbox_cursor_move,
365	.cursor_set2 = vbox_cursor_set2,
366	.reset = vbox_crtc_reset,
367	.set_config = drm_crtc_helper_set_config,
368	/* .gamma_set = vbox_crtc_gamma_set, */
369	.page_flip = vbox_crtc_page_flip,
370	.destroy = vbox_crtc_destroy,
371	};
372
373	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned int i)
374	{
375	struct vbox_crtc *vbox_crtc;
376
377	vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
378	if (!vbox_crtc)
379	return NULL;
380
381	vbox_crtc->crtc_id = i;
382
383	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
384	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
385	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
386
387	return vbox_crtc;
388	}
389
390	static void vbox_encoder_destroy(struct drm_encoder *encoder)
391	{
392	drm_encoder_cleanup(encoder);
393	kfree(encoder);
394	}
395
396	#if RTLNX_VER_MAX(3,13,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
397	static struct drm_encoder drm_encoder_find(struct drm_device dev, u32 id)
398	{
399	struct drm_mode_object *mo;
400
401	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
402	return mo ? obj_to_encoder(mo) : NULL;
403	}
404	#endif
405
406	static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
407	*connector)
408	{
409	#if RTLNX_VER_MIN(5,5,0) \|\| RTLNX_RHEL_MIN(8,3) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
410	struct drm_encoder *encoder;
411
412	/* There is only one encoder per connector */
413	drm_connector_for_each_possible_encoder(connector, encoder)
414	return encoder;
415	#else /* < 5.5 \|\| RHEL < 8.3 */
416	int enc_id = connector->encoder_ids[0];
417
418	/* pick the encoder ids */
419	if (enc_id)
420	# if RTLNX_VER_MIN(4,15,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,6) \|\| (defined(CONFIG_SUSE_VERSION) && RTLNX_VER_MIN(4,12,0))
421	return drm_encoder_find(connector->dev, NULL, enc_id);
422	# else
423	return drm_encoder_find(connector->dev, enc_id);
424	# endif
425	#endif /* < 5.5 \|\| RHEL < 8.3 */
426	return NULL;
427	}
428
429	static const struct drm_encoder_funcs vbox_enc_funcs = {
430	.destroy = vbox_encoder_destroy,
431	};
432
433	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
434	{
435	}
436
437	static bool vbox_mode_fixup(struct drm_encoder *encoder,
438	const struct drm_display_mode *mode,
439	struct drm_display_mode *adjusted_mode)
440	{
441	return true;
442	}
443
444	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
445	struct drm_display_mode *mode,
446	struct drm_display_mode *adjusted_mode)
447	{
448	}
449
450	static void vbox_encoder_prepare(struct drm_encoder *encoder)
451	{
452	}
453
454	static void vbox_encoder_commit(struct drm_encoder *encoder)
455	{
456	}
457
458	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
459	.dpms = vbox_encoder_dpms,
460	.mode_fixup = vbox_mode_fixup,
461	.prepare = vbox_encoder_prepare,
462	.commit = vbox_encoder_commit,
463	.mode_set = vbox_encoder_mode_set,
464	};
465
466	static struct drm_encoder vbox_encoder_init(struct drm_device dev,
467	unsigned int i)
468	{
469	struct vbox_encoder *vbox_encoder;
470
471	vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
472	if (!vbox_encoder)
473	return NULL;
474
475	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
476	#if RTLNX_VER_MIN(4,5,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,3)
477	DRM_MODE_ENCODER_DAC, NULL);
478	#else
479	DRM_MODE_ENCODER_DAC);
480	#endif
481	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
482
483	vbox_encoder->base.possible_crtcs = 1 << i;
484	return &vbox_encoder->base;
485	}
486
487	/**
488	* Generate EDID data with a mode-unique serial number for the virtual
489	* monitor to try to persuade Unity that different modes correspond to
490	* different monitors and it should not try to force the same resolution on
491	* them.
492	*/
493	static void vbox_set_edid(struct drm_connector *connector, int width,
494	int height)
495	{
496	enum { EDID_SIZE = 128 };
497	unsigned char edid[EDID_SIZE] = {
498	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
499	0x58, 0x58, /* manufacturer (VBX) */
500	0x00, 0x00, /* product code */
501	0x00, 0x00, 0x00, 0x00, /* serial number goes here */
502	0x01, /* week of manufacture */
503	0x00, /* year of manufacture */
504	0x01, 0x03, /* EDID version */
505	0x80, /* capabilities - digital */
506	0x00, /* horiz. res in cm, zero for projectors */
507	0x00, /* vert. res in cm */
508	0x78, /* display gamma (120 == 2.2). */
509	0xEE, /* features (standby, suspend, off, RGB, std */
510	/* colour space, preferred timing mode) */
511	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
512	/* chromaticity for standard colour space. */
513	0x00, 0x00, 0x00, /* no default timings */
514	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
515	0x01, 0x01,
516	0x01, 0x01, 0x01, 0x01, /* no standard timings */
517	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
518	0x02, 0x02,
519	/* descriptor block 1 goes below */
520	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
521	/* descriptor block 2, monitor ranges */
522	0x00, 0x00, 0x00, 0xFD, 0x00,
523	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
524	0x20, 0x20,
525	/* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
526	0x20,
527	/* descriptor block 3, monitor name */
528	0x00, 0x00, 0x00, 0xFC, 0x00,
529	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
530	'\n',
531	/* descriptor block 4: dummy data */
532	0x00, 0x00, 0x00, 0x10, 0x00,
533	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
534	0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
535	0x20,
536	0x00, /* number of extensions */
537	0x00 /* checksum goes here */
538	};
539	int clock = (width + 6) * (height + 6) * 60 / 10000;
540	unsigned int i, sum = 0;
541
542	edid[12] = width & 0xff;
543	edid[13] = width >> 8;
544	edid[14] = height & 0xff;
545	edid[15] = height >> 8;
546	edid[54] = clock & 0xff;
547	edid[55] = clock >> 8;
548	edid[56] = width & 0xff;
549	edid[58] = (width >> 4) & 0xf0;
550	edid[59] = height & 0xff;
551	edid[61] = (height >> 4) & 0xf0;
552	for (i = 0; i < EDID_SIZE - 1; ++i)
553	sum += edid[i];
554	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
555	#if RTLNX_VER_MIN(4,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,7) \|\| RTLNX_RHEL_MAJ_PREREQ(8,1) \|\| RTLNX_SUSE_MAJ_PREREQ(15,1) \|\| RTLNX_SUSE_MAJ_PREREQ(12,5)
556	drm_connector_update_edid_property(connector, (struct edid *)edid);
557	#else
558	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
559	#endif
560	}
561
562	static int vbox_get_modes(struct drm_connector *connector)
563	{
564	struct vbox_connector *vbox_connector = NULL;
565	struct drm_display_mode *mode = NULL;
566	struct vbox_private *vbox = NULL;
567	unsigned int num_modes = 0;
568	int preferred_width, preferred_height;
569
570	vbox_connector = to_vbox_connector(connector);
571	vbox = connector->dev->dev_private;
572	/*
573	* Heuristic: we do not want to tell the host that we support dynamic
574	* resizing unless we feel confident that the user space client using
575	* the video driver can handle hot-plug events. So the first time modes
576	* are queried after a "master" switch we tell the host that we do not,
577	* and immediately after we send the client a hot-plug notification as
578	* a test to see if they will respond and query again.
579	* That is also the reason why capabilities are reported to the host at
580	* this place in the code rather than elsewhere.
581	* We need to report the flags location before reporting the IRQ
582	* capability.
583	*/
584	VBoxHGSMIReportFlagsLocation(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
585	HOST_FLAGS_OFFSET);
586	if (vbox_connector->vbox_crtc->crtc_id == 0)
587	vbox_report_caps(vbox);
588	if (!vbox->initial_mode_queried) {
589	if (vbox_connector->vbox_crtc->crtc_id == 0) {
590	vbox->initial_mode_queried = true;
591	vbox_report_hotplug(vbox);
592	}
593	return drm_add_modes_noedid(connector, 800, 600);
594	}
595	/* Also assume that a client which supports hot-plugging also knows
596	* how to update the screen in a way we can use, the only known
597	* relevent client which cannot is Plymouth in Ubuntu 14.04. */
598	vbox->need_refresh_timer = false;
599	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
600	preferred_width = vbox_connector->mode_hint.width ?
601	vbox_connector->mode_hint.width : 1024;
602	preferred_height = vbox_connector->mode_hint.height ?
603	vbox_connector->mode_hint.height : 768;
604	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
605	60, false, false, false);
606	if (mode) {
607	mode->type \|= DRM_MODE_TYPE_PREFERRED;
608	drm_mode_probed_add(connector, mode);
609	++num_modes;
610	}
611	vbox_set_edid(connector, preferred_width, preferred_height);
612
613	#if RTLNX_VER_MIN(3,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
614	if (vbox_connector->vbox_crtc->x_hint != -1)
615	drm_object_property_set_value(&connector->base,
616	vbox->dev->mode_config.suggested_x_property,
617	vbox_connector->vbox_crtc->x_hint);
618	else
619	drm_object_property_set_value(&connector->base,
620	vbox->dev->mode_config.suggested_x_property, 0);
621
622	if (vbox_connector->vbox_crtc->y_hint != -1)
623	drm_object_property_set_value(&connector->base,
624	vbox->dev->mode_config.suggested_y_property,
625	vbox_connector->vbox_crtc->y_hint);
626	else
627	drm_object_property_set_value(&connector->base,
628	vbox->dev->mode_config.suggested_y_property, 0);
629	#endif
630
631	return num_modes;
632	}
633
634	#if RTLNX_VER_MAX(3,14,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
635	static int vbox_mode_valid(struct drm_connector *connector,
636	#else
637	static enum drm_mode_status vbox_mode_valid(struct drm_connector *connector,
638	#endif
639	struct drm_display_mode *mode)
640	{
641	return MODE_OK;
642	}
643
644	static void vbox_connector_destroy(struct drm_connector *connector)
645	{
646	#if RTLNX_VER_MAX(3,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
647	drm_sysfs_connector_remove(connector);
648	#else
649	drm_connector_unregister(connector);
650	#endif
651	drm_connector_cleanup(connector);
652	kfree(connector);
653	}
654
655	static enum drm_connector_status
656	vbox_connector_detect(struct drm_connector *connector, bool force)
657	{
658	struct vbox_connector *vbox_connector;
659
660	vbox_connector = to_vbox_connector(connector);
661
662	return vbox_connector->mode_hint.disconnected ?
663	connector_status_disconnected : connector_status_connected;
664	}
665
666	static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
667	u32 max_y)
668	{
669	struct vbox_connector *vbox_connector;
670	struct drm_device *dev;
671	struct drm_display_mode mode, iterator;
672
673	vbox_connector = to_vbox_connector(connector);
674	dev = vbox_connector->base.dev;
675	list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
676	list_del(&mode->head);
677	drm_mode_destroy(dev, mode);
678	}
679
680	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
681	}
682
683	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
684	.mode_valid = vbox_mode_valid,
685	.get_modes = vbox_get_modes,
686	.best_encoder = vbox_best_single_encoder,
687	};
688
689	static const struct drm_connector_funcs vbox_connector_funcs = {
690	.dpms = drm_helper_connector_dpms,
691	.detect = vbox_connector_detect,
692	.fill_modes = vbox_fill_modes,
693	.destroy = vbox_connector_destroy,
694	};
695
696	static int vbox_connector_init(struct drm_device *dev,
697	struct vbox_crtc *vbox_crtc,
698	struct drm_encoder *encoder)
699	{
700	struct vbox_connector *vbox_connector;
701	struct drm_connector *connector;
702
703	vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
704	if (!vbox_connector)
705	return -ENOMEM;
706
707	connector = &vbox_connector->base;
708	vbox_connector->vbox_crtc = vbox_crtc;
709
710	drm_connector_init(dev, connector, &vbox_connector_funcs,
711	DRM_MODE_CONNECTOR_VGA);
712	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
713
714	connector->interlace_allowed = 0;
715	connector->doublescan_allowed = 0;
716
717	#if RTLNX_VER_MIN(3,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
718	drm_mode_create_suggested_offset_properties(dev);
719	drm_object_attach_property(&connector->base,
720	dev->mode_config.suggested_x_property, 0);
721	drm_object_attach_property(&connector->base,
722	dev->mode_config.suggested_y_property, 0);
723	#endif
724	#if RTLNX_VER_MAX(3,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
725	drm_sysfs_connector_add(connector);
726	#else
727	drm_connector_register(connector);
728	#endif
729
730	#if RTLNX_VER_MIN(4,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,7) \|\| RTLNX_RHEL_MAJ_PREREQ(8,1) \|\| RTLNX_SUSE_MAJ_PREREQ(15,1) \|\| RTLNX_SUSE_MAJ_PREREQ(12,5)
731	drm_connector_attach_encoder(connector, encoder);
732	#else
733	drm_mode_connector_attach_encoder(connector, encoder);
734	#endif
735
736	return 0;
737	}
738
739	int vbox_mode_init(struct drm_device *dev)
740	{
741	struct vbox_private *vbox = dev->dev_private;
742	struct drm_encoder *encoder;
743	struct vbox_crtc *vbox_crtc;
744	unsigned int i;
745	int ret;
746
747	/* vbox_cursor_init(dev); */
748	for (i = 0; i < vbox->num_crtcs; ++i) {
749	vbox_crtc = vbox_crtc_init(dev, i);
750	if (!vbox_crtc)
751	return -ENOMEM;
752	encoder = vbox_encoder_init(dev, i);
753	if (!encoder)
754	return -ENOMEM;
755	ret = vbox_connector_init(dev, vbox_crtc, encoder);
756	if (ret)
757	return ret;
758	}
759
760	return 0;
761	}
762
763	void vbox_mode_fini(struct drm_device *dev)
764	{
765	/* vbox_cursor_fini(dev); */
766	}
767
768	/**
769	* Copy the ARGB image and generate the mask, which is needed in case the host
770	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
771	* if the corresponding alpha value in the ARGB image is greater than 0xF0.
772	*/
773	static void copy_cursor_image(u8 src, u8 dst, u32 width, u32 height,
774	size_t mask_size)
775	{
776	size_t line_size = (width + 7) / 8;
777	u32 i, j;
778
779	memcpy(dst + mask_size, src, width * height * 4);
780	for (i = 0; i < height; ++i)
781	for (j = 0; j < width; ++j)
782	if (((u32 )src)[i width + j] > 0xf0000000)
783	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
784	}
785
786	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
787	u32 handle, u32 width, u32 height,
788	s32 hot_x, s32 hot_y)
789	{
790	struct vbox_private *vbox = crtc->dev->dev_private;
791	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
792	struct ttm_bo_kmap_obj uobj_map;
793	size_t data_size, mask_size;
794	struct drm_gem_object *obj;
795	u32 flags, caps = 0;
796	struct vbox_bo *bo;
797	bool src_isiomem;
798	u8 *dst = NULL;
799	u8 *src;
800	int ret;
801
802	if (!handle) {
803	bool cursor_enabled = false;
804	struct drm_crtc *crtci;
805
806	/* Hide cursor. */
807	vbox_crtc->cursor_enabled = false;
808	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
809	head) {
810	if (to_vbox_crtc(crtci)->cursor_enabled)
811	cursor_enabled = true;
812	}
813
814	if (!cursor_enabled)
815	VBoxHGSMIUpdatePointerShape(vbox->guest_pool, 0, 0, 0,
816	0, 0, NULL, 0);
817	return 0;
818	}
819
820	vbox_crtc->cursor_enabled = true;
821
822	if (width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT \|\|
823	width == 0 \|\| height == 0)
824	return -EINVAL;
825	ret = VBoxQueryConfHGSMI(vbox->guest_pool,
826	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
827	if (ret)
828	return ret == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
829
830	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
831	/*
832	* -EINVAL means cursor_set2() not supported, -EAGAIN means
833	* retry at once.
834	*/
835	return -EBUSY;
836	}
837
838	#if RTLNX_VER_MIN(4,7,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)
839	obj = drm_gem_object_lookup(file_priv, handle);
840	#else
841	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
842	#endif
843	if (!obj) {
844	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
845	return -ENOENT;
846	}
847
848	bo = gem_to_vbox_bo(obj);
849	ret = vbox_bo_reserve(bo, false);
850	if (ret)
851	goto out_unref_obj;
852
853	/*
854	* The mask must be calculated based on the alpha
855	* channel, one bit per ARGB word, and must be 32-bit
856	* padded.
857	*/
858	mask_size = ((width + 7) / 8 * height + 3) & ~3;
859	data_size = width * height * 4 + mask_size;
860	vbox->cursor_hot_x = hot_x;
861	vbox->cursor_hot_y = hot_y;
862	vbox->cursor_width = width;
863	vbox->cursor_height = height;
864	vbox->cursor_data_size = data_size;
865	dst = vbox->cursor_data;
866
867	#if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
868	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.resource->num_pages, &uobj_map);
869	#elif RTLNX_VER_MIN(5,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(8,5)
870	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.mem.num_pages, &uobj_map);
871	#else
872	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
873	#endif
874	if (ret) {
875	vbox->cursor_data_size = 0;
876	goto out_unreserve_bo;
877	}
878
879	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
880	if (src_isiomem) {
881	DRM_ERROR("src cursor bo not in main memory\n");
882	ret = -EIO;
883	goto out_unmap_bo;
884	}
885
886	copy_cursor_image(src, dst, width, height, mask_size);
887
888	flags = VBOX_MOUSE_POINTER_VISIBLE \| VBOX_MOUSE_POINTER_SHAPE \|
889	VBOX_MOUSE_POINTER_ALPHA;
890	ret = VBoxHGSMIUpdatePointerShape(vbox->guest_pool, flags,
891	vbox->cursor_hot_x, vbox->cursor_hot_y,
892	width, height, dst, data_size);
893	ret = ret == VINF_SUCCESS ? 0 : ret == VERR_NO_MEMORY ? -ENOMEM :
894	ret == VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
895
896	out_unmap_bo:
897	ttm_bo_kunmap(&uobj_map);
898	out_unreserve_bo:
899	vbox_bo_unreserve(bo);
900	out_unref_obj:
901	#if RTLNX_VER_MIN(5,9,0) \|\| RTLNX_RHEL_MIN(8,4) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
902	drm_gem_object_put(obj);
903	#else
904	drm_gem_object_put_unlocked(obj);
905	#endif
906
907	return ret;
908	}
909
910	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
911	{
912	struct vbox_private *vbox = crtc->dev->dev_private;
913	s32 crtc_x =
914	vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
915	s32 crtc_y =
916	vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
917	int ret;
918
919	x += vbox->cursor_hot_x;
920	y += vbox->cursor_hot_y;
921	if (x + crtc_x < 0 \|\| y + crtc_y < 0 \|\|
922	x + crtc_x >= vbox->input_mapping_width \|\|
923	y + crtc_y >= vbox->input_mapping_width \|\|
924	vbox->cursor_data_size == 0)
925	return 0;
926	ret = VBoxHGSMICursorPosition(vbox->guest_pool, true, x + crtc_x,
927	y + crtc_y, NULL, NULL);
928	return ret == VINF_SUCCESS ? 0 : ret == VERR_NO_MEMORY ? -ENOMEM : ret ==
929	VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
930	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 96407

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